Determine the constant angular velocity θ˙ of the vertical shaft of the amusement ride if ϕ = 50 ∘. Neglect the mass of the cables and the size of the passeng

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.